Better Action Descriptions

I'm always frustrated when I try to add new behavior to my configuration but have no idea if I'm assigning a keybinding to the right command until I try it out. i.e. - I just tried to make it so I can do something similar to cmd + tab, but just for the windows within my current workspace, but either I'm assigning to the wrong command or I'm assigning an invalid key-binding.

It would be great if the commands had descriptions and/or visual representations that you could expand from within the preferences pane.